https://bugs.winehq.org/show_bug.cgi?id=41166
--- Comment #7 from PeterG peter.g.anderson@live.co.uk --- With regard to the OpenGL artifacting, I can confirm that this still happens in WoW Legion 7.2.0
However, Blizzard no longer provide the level of OpenGL support that they used to. I suspect that this is a problem with the OpenGL implementation in WoW itself, not wine.